＆QUOT; java.lang.IllegalStateException：活动已被摧毁＆QUOT;当preSS onBack pressed（） [英] "java.lang.IllegalStateException: Activity has been destroyed" when press onBackPressed()

问题描述

我有一个动画片段的活性。当我美元pssed关闭活动我得到这个错误回到pre $ PSS。这是什么意思？

I have an activity with an animated fragment. When I press on backpressed to close the activity I get this error. What does it mean?

  01-24 12:41:24.407: E/AndroidRuntime(23621):    FATAL EXCEPTION: main
 01-24 12:41:24.407: E/AndroidRuntime(23621):     java.lang.IllegalStateException: Activity has been destroyed
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1351)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.app.BackStackRecord.commit(BackStackRecord.java:574)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at com.eni.enim4s.TranslucentActivity$1.run(TranslucentActivity.java:70)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.os.Handler.handleCallback(Handler.java:725)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.os.Handler.dispatchMessage(Handler.java:92)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.os.Looper.loop(Looper.java:176)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at android.app.ActivityThread.main(ActivityThread.java:5279)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at java.lang.reflect.Method.invokeNative(Native Method)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at java.lang.reflect.Method.invoke(Method.java:511)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
 01-24 12:41:24.407: E/AndroidRuntime(23621):   at dalvik.system.NativeStart.main(Native Method)

我的code：

  public class TranslucentActivity extends Activity {

private Fragment fragment;
private FrameLayout frame;
private android.app.FragmentTransaction ft;
private android.app.FragmentManager fragmentManager;


@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.translucent);

     frame =(FrameLayout)findViewById(R.id.container);
  }

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    // TODO Auto-generated method stub
    super.onWindowFocusChanged(hasFocus);
        frame.postDelayed(new Runnable() {

        @Override
            public void run() {
                // TODO Auto-generated method stub
         fragment = new ViewDetail();
         fragmentManager = getFragmentManager(); 
         ft = fragmentManager.beginTransaction(); 
        ft.setCustomAnimations(R.animator.trans_left_in,R.animator.trans_left_out);
        ft.addToBackStack(null); 
        ft.replace(R.id.container, fragment, "Dettaglio"); 
        ft.commit();//the error is here


            }
        }, 500);
}




 @Override
     public void onBackPressed() {
    super.onBackPressed();
    this.finish();
   }

}

推荐答案

你可以删除该 onBack pressed 由于Android隐含完成您的返回键$活动p $ pssed。

you can just remove this onBackPressed as android implicitly finishes your activity on back key pressed.

和不叫 addToBackStack ：

ft.addToBackStack(null); 

删除上述行这增加您的交易片段在backstack和pssed第一个事务返回键$ P $的恢复，然后活动就结束了。

remove the above line this adds your fragment transaction in backstack and on back key pressed first transaction is reverted and then activity is finished.

如果您删除此回preSS将完成的活动。

If you remove this back press will finish the activity.

更改为：

    if(hasFocus){
    frame.postDelayed(new Runnable() {

    @Override
        public void run() {
            // TODO Auto-generated method stub
     fragment = new ViewDetail();
     fragmentManager = getFragmentManager(); 
     ft = fragmentManager.beginTransaction(); 
    ft.setCustomAnimations(R.animator.trans_left_in,R.animator.trans_left_out);
    ft.addToBackStack(null); 
    ft.replace(R.id.container, fragment, "Dettaglio"); 
    ft.commit();//the error is here


        }
    }, 500);
  }

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